Error Codes: Overview - Daikin VRV W T-Series Installation Manual

10 Troubleshooting
10 .3

Error codes: Overview

Malfunction code
Main Sub code
code Master/sub 1/sub 2
01/03/05
E3
02/04/06
01/02/03
E4
01/05/08
E9
03/06/09
04/07/10
01/03/05
F3
20/21/22
02
F6
01/02/03
H9
01/02/03
HJ
16/22/28
J3
17/23/29
56/57/58
47/49/51
48/50/52
01/03/05
J5
01/02/03
J6
01/02/03
J7
06/07/08
18/19/20
01/02/03
J9
17/18/19
01/02/03
JA
01/02/03
JC
01/06/08
LC
01/02/03
P1
01/05/07
U1
Installation manual
46
Contents
▪ High pressure switch is activated.
(S1PH)-A1P (X3A)
▪ High pressure switch connectors are detached.
-A1P (X3A)
▪ Stop valves are closed.
▪ Refrigerant overcharge.
Low pressure malfunction:
▪ Stop valves are closed.
▪ Refrigerant shortage.
▪ Indoor unit malfunction
Electronic expansion valve malfunction
(Y1E)-A1P (X21A)
Electronic expansion valve malfunction
(Y2E)-A1P (X22A)
Electronic expansion valve malfunction
(Y3E)-A1P (X25A)
Discharge temperature too high (R12T):
▪ Stop valves are closed.
▪ Refrigerant shortage.
Compressor casing temperature too high (R13T):
▪ Stop valves are closed.
▪ Refrigerant shortage.
▪ Stop valves are closed.
▪ Refrigerant overcharge.
Temperature sensor malfunction
(R1T)-A4P (X11A)
Water system malfunction
Temperature sensor malfunction
(R12T)-A1P (X19A)
Temperature sensor malfunction
(R13T)-A1P (X19A)
Temperature sensor malfunction
(R3T)-A1P (X30A)
Temperature sensor malfunction
(R7T)-A1P (X30A)
Temperature sensor malfunction
(R6T)-A1P (X30A)
Temperature sensor malfunction
(R8T)-A1P (X29A)
Temperature sensor malfunction
(R11T)-A1P (X18A)
Temperature sensor malfunction
(R5T)-A1P (X30A)
Temperature sensor malfunction
(R2T)-A4P (X12A)
High pressure sensor malfunction
(S1NPH)-A1P (X32A)
Low pressure sensor malfunction
(S1NPL)-A1P (X31A)
Transmission trouble.
A 3P (X6A)-A1P (X28A)
Unbalanced power supply voltage.
No power supplied to outside unit or indoor unit
(Reverse phase/open phase).
Solution
▪ Check stop valves situation or abnormalities in
(field) piping or waterflow.
▪ Securely connect each connector. Refer to the wiring
diagram attached to the back of the control box cover.
▪ Open stop valves.
▪ Check refrigerant amount and recharge.
▪ Open stop valves.
▪ Check refrigerant amount and recharge.
▪ Check the user interface's display or transmission
wiring between the outside unit and the indoor unit.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
▪ Open stop valves.
▪ Check refrigerant amount and recharge.
▪ Open stop valves.
▪ Check refrigerant amount and recharge.
▪ Open stop valves.
▪ Check refrigerant amount and recharge.
Check connection on printed circuit board or actuator.
▪ Check water pump and waterflow.
▪ Check flow switch interlock connection (X2M
terminals 5, 6).
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection.
Check if power supply is within the range.
Check if the power supply wiring for the outside unit
or indoor unit is correctly connected, and correct if
necessary.
VRV W T-Series water-cooled system air conditioner
RWEQ96~432TAYCU
4P540122-1B – 2018.11